Chris Lamb is a remarkably active and outgoing DPL. But yes, I've been active in Debian for well over a decade and I've seen both a lot of people leave and new people that I don't know or get to know as I used to. All 5 DPL candidates ring a bell for me, though.
There are quite a few names I've never heard of, and some that I've heard of, but not as DPL.
The last six (after Hocevar) are total blanks for me.
Have my interests changed so much, or did the recent DPLs keep a much lower profile?